Learning and billiards? It's a mysterious thing. Some days I think I've learned something but next day I go back and try to apply it and discover it was all a delusion.
Anyway, my most recent discoveries have been that if I take a squarer stance - facing the shot, feet open, right shoulder aiming along the target line - my stroke is truer and more reliable, especially on those length of the table draw shots where force is necessary. It seems to be working.
In Thursday's 9-Ball tournament, I played one of the best around here, twice, and beat him 4-1 the first time, and lost 3-4 the second. I made several of those long draw shots that night. It made me competitive.
Another thing I've been trying to correct (oh, I've got so many things to correct) is the impulse to snap the cue back after contact. I read somewhere that after contact you should consciously leave the cue extended in the follow through position as if you were posing for a picture. That seems to be doing it for me.